Lost Breath: COPD and Your Lungs—

Chronic obstructive pulmonary disease is the fourth leading cause of death among Americans. But finding and treating the disease early can slow it down. CLICK HERE. 

Your heart is really a muscle. It's located a little to the left of the middle of your chest, it's about the size of your fist, and beats about 100,000 times a day. For a look inside CLICK HERE.